There is no single 'formula' for this, as the maximum current a circuit can handle depends on the temperature the various components within that circuit can operate at, without deterioration. There are so many factors involved, such as the type of component, the type of insulation, whether it can cool naturally or whether it must be force cooled, etc. Every circuit must be considered on an individual basis.
For the amperage of a metal halide fixture look for the nameplate which can be found on the side of the ballast. There it will tell you what the amperage of the fixture draws. Knowing what one fixture draws will allow you to size the lighting circuit for wire and breaker sizes.
You need also to know the resistance of the cable. First you establish what the current of the load is. Then from that you calculate the wire size. From a wire size chart you find the wire resistance. Then use the formula I (squared) x R.
Volt amps is the same way of saying watts. This is seen in the formula Watts = Volts x Amps. Using the formula I = W/E we transpose I = 20000/240 = 83.33 amps.
Here is the formula you use. I = E/R. I = amperage, E = volts, R = resistance in ohms.
Current = (Voltage across the circuit) divided by (Total resistance of the circuit). The current is the same at every point in the series circuit.
multiply the total voltage in the circuit by the total amperage
To convert kilowatts to amperes, you need to know the voltage of the circuit. Without the voltage, you cannot determine the amperage. Use the formula: Amperes = Kilowatts / Volts.
To determine the amperage for a 24V 200AH battery, you use the formula: Amperage = Capacity (AH) / Voltage (V) So for a 24V 200AH battery: Amperage = 200AH / 24V = 8.33 amps
To calculate the amperage in a circuit with a power of 6kW on a 240-volt supply, you can use the formula: Amperage (A) = Power (W) / Voltage (V). In this case, the amperage would be 25A. This calculation is based on the relationship between power, voltage, and current in an electrical circuit, as defined by Ohm's Law.
To calculate the amperage in a 15kVA circuit at 440 volts, you can use the formula: Amperage = Power (kVA) / Voltage (V) * 1000. Plugging in the values, you get: Amperage = 15 / 440 * 1000 ≈ 34.09 amps.
To calculate amps in a circuit, use the formula: Amps Volts / Ohms. This formula helps determine the current flowing through a circuit based on the voltage and resistance present.
The current (amperage) flowing in a circuit is related to, amongst other things, the voltage and the wattage of the device being used. To find the amperage in a circuit use the formula A=W/V, where A = amps, W = Watts and V = Volts.For instance if the supply voltage is 120 V and the device is 1200 Watts the amperage drawn would be 1200 divided by 120 which would equal 10 amps.The circuit is also constrained by the rating of the fuse or circuit breaker and the dimensions of the conducing cable.
To calculate the amperage, use the formula: Amps = Watts / Volts. For a 250 watt deicer on a 120 volt circuit, the amperage drawn would be 2.08 amps.
To calculate the amperage for 4 kW, you would need to know the voltage of the circuit. However, assuming a standard voltage of 120V, you can use the formula: amps = watts / volts. Therefore, for 4 kW at 120V, the amperage would be approximately 33.33 amps.
The amperage of an electric roaster can vary depending on its size and wattage. To calculate the amperage, you can use the formula: Amperage = Wattage / Voltage. For example, if a roaster has a wattage rating of 1200W and operates on a standard 120V outlet, the amperage would be 10A (1200W / 120V = 10A). It's important to check the specific wattage and voltage requirements of your electric roaster to determine the exact amperage it uses.
To calculate the watts from amps, you need to know the voltage of the circuit. The formula to calculate watts is: Watts = Amps x Volts. So, without knowing the voltage in the circuit, it is not possible to accurately determine the wattage from just knowing the amperage.
To obtain amperage from a formula you need at least two components. Formula for amperage are I = W/E, I = E/R and I = sq root of W/R.